Everyone's heard of it, but what does E=mc2, the world's most famous equation, really mean? And why did it change the world? An accessible, suspenseful epic, Einstein's Big Idea reveals the roots of his astonishing breakthrough in the human stories of men

Belgian Congo, French Congo Belge, former colony (coextensive with the present-day Democratic Republic of the Congo) in Africa, ruled by Belgium from 1908 until 1960. It was established by the Belgian parliament to replace the previous, privately owned Co